[INFO] fetching crate learn_rust_demo 0.1.0...
[INFO] testing learn_rust_demo-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate learn_rust_demo 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate learn_rust_demo 0.1.0
[INFO] finished tweaking crates.io crate learn_rust_demo 0.1.0
[INFO] tweaked toml for crates.io crate learn_rust_demo 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate learn_rust_demo 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate learn_rust_demo 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d7339ec445e4358c52f338024ac47c172c9b84d1b5cb6ab98eded2299e0224a
[INFO] running `Command { std: "docker" "start" "-a" "9d7339ec445e4358c52f338024ac47c172c9b84d1b5cb6ab98eded2299e0224a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d7339ec445e4358c52f338024ac47c172c9b84d1b5cb6ab98eded2299e0224a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d7339ec445e4358c52f338024ac47c172c9b84d1b5cb6ab98eded2299e0224a", kill_on_drop: false }`
[INFO] [stdout] 9d7339ec445e4358c52f338024ac47c172c9b84d1b5cb6ab98eded2299e0224a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffe1de6fbe4944f8072933ef3f3e9c460bc284534430bc2c5f1e5ee323077576
[INFO] running `Command { std: "docker" "start" "-a" "ffe1de6fbe4944f8072933ef3f3e9c460bc284534430bc2c5f1e5ee323077576", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_rust_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "ffe1de6fbe4944f8072933ef3f3e9c460bc284534430bc2c5f1e5ee323077576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffe1de6fbe4944f8072933ef3f3e9c460bc284534430bc2c5f1e5ee323077576", kill_on_drop: false }`
[INFO] [stdout] ffe1de6fbe4944f8072933ef3f3e9c460bc284534430bc2c5f1e5ee323077576
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3fe49511b0cbe391bd92ae6f173968731908fee1d1cc94664dc27788fdc26b1
[INFO] running `Command { std: "docker" "start" "-a" "a3fe49511b0cbe391bd92ae6f173968731908fee1d1cc94664dc27788fdc26b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_rust_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "a3fe49511b0cbe391bd92ae6f173968731908fee1d1cc94664dc27788fdc26b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3fe49511b0cbe391bd92ae6f173968731908fee1d1cc94664dc27788fdc26b1", kill_on_drop: false }`
[INFO] [stdout] a3fe49511b0cbe391bd92ae6f173968731908fee1d1cc94664dc27788fdc26b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e71bc851ec86cc3edc1b801af9a9e8ee172efe27261feaf5071a924db06657e0
[INFO] running `Command { std: "docker" "start" "-a" "e71bc851ec86cc3edc1b801af9a9e8ee172efe27261feaf5071a924db06657e0", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/learn_rust_demo-e8392b50bb99d305)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/learn_rust_demo-1dd87889c348e8d2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests learn_rust_demo
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e71bc851ec86cc3edc1b801af9a9e8ee172efe27261feaf5071a924db06657e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e71bc851ec86cc3edc1b801af9a9e8ee172efe27261feaf5071a924db06657e0", kill_on_drop: false }`
[INFO] [stdout] e71bc851ec86cc3edc1b801af9a9e8ee172efe27261feaf5071a924db06657e0